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Note 14 - Business Segments (Details Textual) | 3 Months Ended | 9 Months Ended |
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Sep. 30, 2024 USD ($) | Sep. 30, 2023 USD ($) | Sep. 30, 2024 USD ($) | Sep. 30, 2023 USD ($) | Dec. 31, 2023 USD ($)
Number of Operating Segments |  |  |  | 2 |  |
Number of Bank Branches |  | 27 |  | 27 |  |
Loans Receivable, Fair Value Disclosure |  | $ 13,861,000 |  | $ 13,861,000 |  | $ 15,088,000
Noninterest Expense | [1] | 25,832,000 | $ 23,586,000 | 73,218,000 | $ 71,314,000 |
Home Lending [Member] |  |  |  |  |  |
Noninterest Expense | [1] | 5,633,000 | 5,047,000 | 14,968,000 | 15,215,000 |
Home Lending [Member] | Allocated Overhead Expense [Member] |  |  |  |  |  |
Noninterest Expense |  | 1,800,000 | 1,500,000 | 4,800,000 | 4,700,000 |
Residential Mortgage [Member] |  |  |  |  |  |
Increase (Decrease) in Finance Receivables |  | 262,000 | (343,000) | 448,000 | (285,000) |
Loans Receivable, Fair Value Disclosure |  | $ 13,900,000 | $ 15,200,000 | $ 13,900,000 | $ 15,200,000 |
[1] | Noninterest expense includes allocated overhead expense from general corporate activities. Allocation is determined based on a combination of segment assets and FTEs. For the three and six months ended June 30, 2024, the Home Lending segment included allocated overhead expenses of $1.5 million and $3.0 million, compared to the three and six months ended June 30, 2023, of $1.6 million and $3.2 million, respectively.

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- Definition The increase (decrease) during the reporting period in outstanding loans including accrued interest. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (a) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-28 + Details
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- Definition Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482907/825-10-50-10 + Details
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- Definition Total aggregate amount of all noninterest expense. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(14)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478524/942-220-S99-1 + Details
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- Definition Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 49 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482785/280-10-55-49 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 18 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-18 + Details
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